On Tuesday, Steelers coach Mike Tomlin said Roethlisberger's problem wasn't a major one and "I don't want to make more out of it than what it is."
The Steelers haven't updated Roethlisberger's condition since then. Tomlin said Roethlisberger's status would be updated Friday.
It is common for Steelers players who have relatively minor injuries to miss a day or two of practice and then take part in the final practice of the week Friday and play on Sunday.
Batch hasn't started a game since the 2006 opener, when he threw three touchdown passes in a 28-17 victory over the Miami Dolphins. Roethlisberger, who missed that game after having appendicitis, has
started each of the Steelers' 28 games since then.